Ensure that current uses of BaseException are required

* In some cases, it appears that Exception should have been used instead
  as there's no need to catch sys.exit KeyboardInterrupt and similar.
* In a few cases, it appears that BaseException is used because
  a library we depend on calls sys.exit() contrary to good coding
  design.  Comment those so that we know that those have been audited
  and found to be correct and change to use (Exception, SystemExit)
  instead.

lib/ansible/modules/cloud/amazon/rds_snapshot_facts.py

@@ -289,7 +289,7 @@ from ansible.module_utils.ec2 import AWSRetry, boto3_tag_list_to_ansible_dict, c
 
 try:
     import botocore
-except BaseException:
+except Exception:
     pass  # caught by imported HAS_BOTO3
 
 

lib/ansible/modules/cloud/univention/udm_dns_record.py

@@ -159,7 +159,7 @@ def main():
                     obj.create()
                 else:
                     obj.modify()
-        except BaseException as e:
+        except Exception as e:
             module.fail_json(
                 msg='Creating/editing dns entry {} in {} failed: {}'.format(name, container, e)
             )
@@ -170,7 +170,7 @@ def main():
             if not module.check_mode:
                 obj.remove()
             changed = True
-        except BaseException as e:
+        except Exception as e:
             module.fail_json(
                 msg='Removing dns entry {} in {} failed: {}'.format(name, container, e)
             )

lib/ansible/modules/cloud/univention/udm_share.py

@@ -513,7 +513,7 @@ def main():
                     obj.create()
                 elif changed:
                     obj.modify()
-        except BaseException as err:
+        except Exception as err:
             module.fail_json(
                 msg='Creating/editing share {} in {} failed: {}'.format(
                     name,
@@ -528,7 +528,7 @@ def main():
             if not module.check_mode:
                 obj.remove()
             changed = True
-        except BaseException as err:
+        except Exception as err:
             module.fail_json(
                 msg='Removing share {} in {} failed: {}'.format(
                     name,